Lavrentiev, M. M. <br/><br/>
Some improperly posed problems of mathematical physics / 
M.M. Lavrentiev ; translation revised by Robert J. Sacker. 
 - Berlin :  Springer-Verlag,  1967. 
 - 72 p. :  ill. ;  24 cm. 
 - Springer tracts in natural philosophy  11 .
<br/><br/> Translation of Onekotorykh nekorrektnykh zadachakh matematicheskoi fiziki 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical physics